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<1234567…34>
  • +2 Grey versionsThis thread is an attempt to pin down the various hardware revisions of the +2 Grey. If anybody can provide further images from their machines or fur…

    ... capacitors, 2 bodge resistors and a capacitor on the ... ]Distinguishing features: [/i] Encased inductor, capacitor colour change, rear-side bodges ... -content/gallery/zx-spectrum-2/img_2278.jpg[/img] ... 3sinclair-amstrad-zx-spectrum-2-grigio-issue-3/"]Nightfall ...
    smogit smogit September 2015 Hardware
  • +3 Audio hates me with a passionHihi Since nobody seemed to have a spare +3B board, I've been trying to replace the audio entirely, aiming for a speaker inside the machine Since p…

    ... Sinclair 128 and Amstrad +2.
    22nF capacitor between pins 17,3 ... pin 5, 68k resistor on +2 instead of 6.8k Sinclair ... is audio out socket on +2.
    Polarised caps are reversed ... 128 first and then a +2, the Sinclair 128 had the ...
    FrankT FrankT June 2008 Hardware
  • How to clean up video output to TFT LCD - Spectrum 48kHi, I hope that there is an easy answer to this question. I have modded the RF socket on my 48k Spectrum to output composite video as described in t…

    ... /> [I]Here[/I] the capacitor removes any DC component from ... Spectrum signal hovers around 2.5V, capacitor will charge to that ... and other side of the capacitor will hover around 0V. ... of receiving equipment.

    Capacitor value (in combination with 75 ...
    RetroTechie RetroTechie November 2010 Hardware
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ... and A15 issue.

    2 - Routed Capacitor tracks.

    3 ...
    RMartins RMartins July 2016 Hardware
  • Issue with TV signal + Inductor Coil (16K Issue 2 Speccy)Hello guys, I just got a 16K Issue 2 Speccy from eBay. It was sold as not working so I knew there would be some work needed before it's working ag…

    ... just got a 16K Issue 2 Speccy from eBay. It was ... did the composite mod with capacitor) and it seemed like it ... appears to be with the inductor coil which gives me +9V ... - https://youtu.be/pQz6yP0PuIA
    2) Measurements - https://youtu.be/vwgwX_Um73k
    Vaylo Vaylo August 2017 Hardware
  • +2 grey PSU capacitor changeHi I opened up a +2 grey power supply (2.1A max output) unit in order to replace the aged electrolytic capacitor inside, just like I always do with …

    ... opened up a +2 grey power supply (2.1A max output) ... to replace the aged electrolytic capacitor inside, just like I ... is one big 6000uF 16V capacitor inside BUT i can' ... with a fresh 4700uF 25V capacitor?
    Is there be ... on the grey psu is 2.1A instead of 1. ...
    gtsamour gtsamour November 2008 Hardware
  • What mods do you recommend for a +2aHello all, I have recently got a +2a, that is running nicely. I'm thinking of modding it. I have read that the +3e rom is a good option. what else…

    ... (composite) output instead

    2. Disconnect the audio signal from ... very simple just one capacitor (82pF) and one inductor (15uH) in series ... . The filter would eliminate yellow-blue ghosting ...
    Claudius Claudius August 2017 Hardware
  • issue 2 board c34 getting hotHi All, Can anyone help with c34 getting hot very quickly? I`ve got an issue 2 board, there is no `buzz` from coil. yet the spectrum initalises to co…

    ... ? I`ve got an issue 2 board, there is no `buzz ... C34 is presumably a smoothing capacitor for the 5v line, so ...
    adekav adekav March 2009 Hardware
  • Grey +2 video output and oddities.I've been experimenting with one of the above that I acquired years ago, but had just been buried at the back of a cupboard. I've connected it up to…

    ... diagram and inside my +2. The circuit diagram shows ... normally configured on new grey +2 Spectrums?

    Having ... composite output on the +2's video connector not being ... 2?

    Finally, someone has rather messily soldered a ceramic capacitor ...
    Zorn Zorn January 2012 Hardware
  • +2 Grey - low 128k sound volumeI'm trying to revive my old grey +2.... First problem was a faulty RF signal, so I bought a SCART cable from Retro Computer Shack on e-bay (it's the…

    ... to revive my old grey +2....

    First problem was ... the sound output on the +2 to take the audio to ... , I've discovered that removing capacitor C31 as described here [URL ...
    mappy24 mappy24 December 2012 Hardware
  • Correction of +2 hardware errorsThis is a collection of various pieces of information picked up from various places, including a lot from this forum. I have edited it and reworded i…

    ...
    [U][B]Correction of +2 hardware errors:-[/B][/U]
    capacitor between IC11, pin 4 ... The links in most +2 machines in the UK are ... needs a big electrolytic capacitor to get a smooth ... line. Switching this big capacitor to the 5V line would ...
    1024MAK 1024MAK January 2013 Hardware
  • Project #1 : Speccy 128k+2 with diVide inside...Hi guys, I just have finished my Super Spectrum #1 The idea (I was thinking of that since 2007) was to fit an english grey +2 motherboard in a +2A…

    ... not on the 2 french grey +2 I own), a ... made some modifications to my +2 and + 2A : I ... the grey +2 with some kind of capacitor between 2 pins. ... I finally removed the capacitor on ... br /> I checked my 2 others +2 and another +2a, they ...
    bugpat bugpat April 2013 Hardware
  • Spectrum +2 little help pleaseHi all, Firstly let me say, what an amazing site this is! So much incredible detail and information, created by what looks to be a very dedicated an…

    ... i turned to my grey +2, handy having the incorporated tape ... do a version for the +2?[/U] as i found these ... an issue on my ZX. Capacitor replacement solved.

    By ... have is around another plus 2, this time the later Black ...
    Edge Edge September 2013 Hardware
  • One more grey +2 with video problemsI guess I need your help again to hopefully be able to do some proper troubleshooting myself one day. Here I have a grey +2, which could be a bottom…

    ... /> Here I have a grey +2, which could be a bottomless ... (two resistors and a ceramic capacitor).
    schombi schombi October 2013 Hardware
  • 'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…

    ...
    [*]The Coil
    [*]C47 capacitor
    [/LIST]

    There ... else I'm missing?
    2. Could I test the ULA ...
    blueowl0708 blueowl0708 September 2014 Hardware
  • Pentagon 1024SL 2.2 woesHey there,<br>I'm currently trying to get my Pentagon 1024SL 2.2 up and running for the second time.<br>Right now it's showing me the screen one woul…

    ... to get my Pentagon 1024SL 2.2 up and running for the ... resistor
    - rechecked every single capacitor (visually - I've replaced the ...
    Shockwav3 Shockwav3 May 2015 Hardware
  • Newbie Hardware QuestionsI just recently aquired my first Spectrum, a +2, and I'm in the process of getting acquainted with it. Being a newbie I had some questions, which …

    ... I've seen the capacitor and 15uH inductor mod to the TEA2000 ... the Spectrum 128K and the +2 are generally described as "virtually ... identical", and that the +2 has some compatibility issues with ... . I wondered if the +2 accept the 128 ROM image ...
    Questarian Questarian July 2015 Hardware
  • C21 in ZX 128K+2Hi, What is the function of capacitor C21 in ZX 128K+2 ? It is missing in all schematics I got.

    Hi,

    What is the function of capacitor C21 in ZX 128K+2 ? It is missing in all schematics I got.
    kpuchatek kpuchatek September 2015 Hardware
  • bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…

    ... I got a ZX Spectrum+2 that worked a bit ... seems to work. I tested 2 interfaces (MB02+ and divIDE) ... I replaced this capacitor with a new 220µ capacitor, resoldered L1 ... the transverter of a grey +2 is ok! :)

    2.

    Greetings ...
    ingo ingo November 2016 Hardware
  • +2 tape input protectionI'll start this by admitting I've not checked on a 48K or Toasty-Rack diagram to see how the tape input is actually wired in but what I'm asking is f…

    ... with the grey or black +2 then there's a bit ... along the lines of a capacitor maybe ? I do remember reading ...
    spider spider January 2017 Hardware
  • Screen corruption with devices on edge connector (grey +2)Hi, I've recently done a full capacitor replacement and replaced all 16x DRAM chips on my grey +2. Prior to this I would get a corrupted screen…

    ... recently done a full capacitor replacement and replaced all ... DRAM chips on my grey +2.

    Prior ... it sitting at the +2 menu screen for several ... DivIDE+, or the PS/2 keyboard cart from Lotharek. ... I'm using the standard +2 power brick (barrel jack) ...
    Megatron-UK Megatron-UK August 2020 Hardware
  • ZX Spectrum +2B 128K sound distorted and vertical jailbars. How to fix it?Hello, I have a ZX Spectrum +2B 128K (Issue 4 Motherboard) which suffers from sound distortion (the AY music is loud and distorted) and also very fa…

    ... so I don't have capacitor C37 and I already have ... jailbars I found fix for +2 grey units but not for ... have the blue and yellow ghosting (which I would like to ...
    rfthunder rfthunder February 2021 Hardware
  • +3 sound cureHi all, As most of us know the Spectrum+3A has this sound problem, distortion. The +3B had this problem fixed. I done some looking at the circuitry l…

    ... consisting of an inductor of 16?H and a capacitor of 100pF ... this an a lot of +2 +2A and +3 computers with ...
    ingo ingo October 2009 Hardware
  • Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…

    ... one is actually a capacitor or an inductor.

    I don ... pin 1 (and ground, pin 2) on the RGB/Video DIN ...
    1024MAK 1024MAK January 2014 Hardware
  • 128k Toastrack Composite Video output confusion!Hi everyone. Ok, so I have a couple of 48k's that I have performed Wombles fantastic composite mod on. They work great here in Canada on my big scre…

    ... . It works great with my +2 and +3. I am about ... from my +2 is pin sharp and has no yellow ghosting, it ... yellow ghosting fixed with the use of a resistor and capacitor fitted ... /> Do you have any ghosting? Again not yellow ghosting like here...
    RSwipeCA RSwipeCA December 2014 Hardware
  • Just Speccy 128Wow, got home and found that I have received a parcel from Zaxon containing a&nbsp;Just Speccy 128 PCB :-) B-)<br>Now all I need is a parts list, th…

    ... 50V Y5V-Suntan-Axial-Ceramic-Capacitor-11-3560100nF 50V Y5V-P ... -5-08mm-Suntan-Radial-Ceramic-Capacitor-11-3454100nF 100V X7R-P ... -2-54mm-Suntan-Radial-Ceramic-Capacitor-11-3442For the inductor, I ...
    1024MAK 1024MAK May 2015 Hardware
  • Newbie Hardware QuestionsI just recently aquired my first Spectrum, a +2, and I'm in the process of getting acquainted with it. Being a newbie I had some questions, which …

    ... a 15 or 16µH inductor in series to 82 pF ... as 47µH and a capacitor with 27pF or 68µH ... the lower capacitance of the capacitor leads to sharper edges in ... works very well with my +2 and 128k Spectrums.

    ingo ingo July 2015 Hardware
  • Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…

    ... assume this is an issue 2 Spectrum, in which case the ... the two windings of the inductor coil. TR4 very often (though ... due to an old electrolytic capacitor taking out the voltage converter ...
    Zorn Zorn December 2015 Hardware
  • Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …

    ... with badly glued join
    2) no earth
    3) no ... the position of the blue capacitor (over the four pin chip ... and one ceramic) and one inductor (choke / coil) per output ... #Common-mode_chokes"]common mode choke (inductor)[/url] plus two X2 suppression ...
    1024MAK 1024MAK February 2016 Hardware
  • Broken Issue 2 - likely culpritsI've just got hold of an issue 2 spectrum with an interesting layout (heatsink is vertical and goes down to the speaker, some variable resistors and …

    ... high side for an Issue 2 board). So, something’s ... unplugged, obviously). Wait for the capacitor to charge. It should read ... probably gone tits up.
    2. Measure the resistance between the ... br />
    Next, check the inductor for continuity of each coil ...
    Ast_A_Moore Ast_A_Moore March 2018 Hardware
<1234567…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
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